27272261
106934000
115000000
0
27268943
0.001
5000000
0
27268943
0.001
292000
351807000
3183000
107000
805000
2723000
2159000
154428000
2224000
325000
667000
5407000
47000
3146000
6739000
-197407000
15604000
170032000
27000
82000
5407000
12881000
1000
106000
2996000
90000
45000
28100000
170032000
158056000
954000
168844000
23322000
134734000
134732000
1271000
31450000
3806000
2411000
144000
1389000
340000
28000
12500000
12300000
1300000
0.108
138731000
3997000
134734000
95489000
3997000
29945000
9300000
19325000
19325000
19325000
1421644
1500000
7269
95489000
19325000
3997000
29945000
9300000
2000
7000
29945000
29950000
14000
6894000
6880000
31000
35000
88595000
88599000
3000
9300000
9303000
58103000
35.00
115000000
0
27242503
0.001
5000000
0
27242503
0.001
348961000
161000
3453000
1802000
169110000
422000
4000
7495000
6112000
-179671000
19996000
189106000
27000
6119000
16543000
-207000
2936000
94000
207000
189106000
175411000
902000
188110000
25927000
149484000
149687000
1708000
35595000
3727000
3183000
1323000
306000
36000
162180000
12696000
149484000
3000000
125516000
4697000
19468000
4999000
4500000
13231000
13231000
13231000
1300000
3000000
125516000
13231000
4697000
19468000
4999000
4500000
10000
19468000
19478000
3000
31000
12856000
12884000
1000
166000
112660000
112825000
4500000
4500000
P5Y
2019-09-30
3942200
500000
130000000
1089700
P3Y
2017-07-31
2
-11087000
-0.53
2593637000
25615282
27000
-13472000
0
152000
389000
473000
-13240000
-232000
98952000
-4000
39000
-58000
-13476000
-4000
-24000
131000
100000
48831000
13240000
213000
-69729000
129647000
10215000
130044000
990000
1057000
76000
3025000
16000
29250000
1121000
5000
229000
341000
200000
-100000
653000
404000
200000
2589767000
3870000
100000
Q1
-17761000
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
As of March 31, 2016, the estimated future principal payments
due are as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="68%" align="center" border="0">
<tr>
<td width="89%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom" nowrap="nowrap">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'; BORDER-BOTTOM: rgb(0,0,0) 1pt solid; MARGIN-TOP: 0pt; WIDTH: 95.55pt">
<b>Years Ending December 31,</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom" nowrap="nowrap"><b>(in thousands)</b></td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
2016 (April to December)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">2,224</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
2017</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,183</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">5,407</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 0pt">
<b>9. Retirement Plan</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
The Company has a Savings Incentive Match Plan, or SIMPLE IRA, for
employees. Under the terms of the plan, the Company contributes 2%
of an employee’s annual base salary, up to a maximum of the
annual Internal Revenue Service compensation limits, for all
full-time employees.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
During the three months ended March 31, 2016 and 2015, the
Company recognized less than $0.1 million of expense related to its
contributions to the plan.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
The following table summarizes the Company’s marketable
securities as of March 31, 2016 and December 31,
2015:</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 12pt; MARGIN-TOP: 0pt">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="63%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>March 31, 2016</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Amortized</b><br />
<b>Cost</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Gains</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Losses</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Fair Value</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="14" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
<b>Assets:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">88,599</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">31</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(35</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">88,595</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds (due after 1 year through 2 years)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6,880</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">14</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6,894</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Commercial paper (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">29,950</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(7</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">29,945</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
U.S. government securities (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">9,303</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">9,300</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">134,732</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">47</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(45</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">134,734</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 12pt; MARGIN-TOP: 0pt">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="63%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>December 31, 2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Amortized</b><br />
<b>Cost</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Gains</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Losses</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Fair Value</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="14" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
<b>Assets:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">112,825</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">1</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(166</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">112,660</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds (due after 1 year through 2 years)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,884</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(31</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,856</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Commercial paper (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,478</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(10</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,468</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
U.S. government securities (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">149,687</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">4</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(207</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">149,484</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
</tr>
</table>
</div>
2016
false
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>10. Australia Research and Development Tax Incentive</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
The Company’s wholly owned subsidiary, Zafgen Australia Pty
Limited, which conducts core research and development activities on
behalf of the Company, is eligible to receive a 45% refundable tax
incentive for qualified research and development activities. For
the three months ended March 31, 2016 and 2015, $0.1 million
and $0.2 million, respectively, was recorded as a reduction to
research and development expenses in the condensed consolidated
statements of operations. These amounts represented 45% of the
Company’s qualified research and development spending in
Australia. The refund is denominated in Australian dollars and,
therefore, the related receivable is re-measured into U.S. dollars
as of each reporting date. For the three months ended
March 31, 2016 and 2015, the Company recorded in its condensed
consolidated statements of operations unrealized foreign currency
exchange gains of $0.1 million and unrealized foreign currency
exchange losses of less than $0.1 million, respectively, related to
this tax incentive receivable. As of March 31, 2016 and
December 31, 2015, the Company’s tax incentive
receivable from the Australian government was $1.5 million and $1.3
million, respectively.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>5. Notes Payable</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company has outstanding amounts due under a loan and security
agreement with Oxford Finance LLC and Midcap Financial, or the 2014
Credit Facility, entered into in March 2014. All promissory notes
issued under the 2014 Credit Facility are collateralized by
substantially all of the Company’s personal property, other
than its intellectual property. There are no financial covenants
associated with the debt facility; however, there are negative
covenants restricting the Company’s activities, including
limitations on dispositions, mergers or acquisitions; encumbering
or granting a security interest in its intellectual property;
incurring indebtedness or liens; paying dividends; making certain
investments; and certain other business transactions. As of
March 31, 2016 and December 31, 2015, notes payable
consist of the following:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="76%"></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>March 31,</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2016</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="6" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Notes payable</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">5,407</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,119</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Less: current portion</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(2,996</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(2,936</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Notes payable, net of current portion</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,411</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,183</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Debt discount, net of accretion</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(28</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(36</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Accretion related to final payment</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">340</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">306</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Notes payable, net of discount, long term</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">2,723</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,453</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
As of March 31, 2016, the estimated future principal payments
due are as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="68%" align="center" border="0">
<tr>
<td width="89%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom" nowrap="nowrap">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'; BORDER-BOTTOM: rgb(0,0,0) 1pt solid; MARGIN-TOP: 0pt; WIDTH: 95.55pt">
<b>Years Ending December 31,</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom" nowrap="nowrap"><b>(in thousands)</b></td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
2016 (April to December)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">2,224</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
2017</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,183</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">5,407</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 8%; -webkit-text-stroke-width: 0px">
During the three months ended March 31, 2016 and 2015, the
Company recognized $0.2 million of interest expense related to the
2014 Credit Facility. The effective annual interest rate of the
outstanding debt under the 2014 Credit Facility is approximately
10.8%.</p>
</div>
-0.65
3838927000
10-Q
0001374690
2005-11-22
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company excluded the following common stock equivalents,
outstanding as of March 31, 2016 and 2015, from the
computation of diluted net loss per share for the three months
ended March 31, 2016 and 2015 because they had an
anti-dilutive impact due to the net loss incurred for the
periods:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="76%"></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="6" align="center"><b>As of March 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2016</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Options to purchase common stock</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,825,654</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,589,767</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Unvested restricted common stock units</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">13,273</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,870</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,838,927</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,593,637</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
<div>As of March 31, 2016 and December 31, 2015, notes
payable consist of the following:
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 12pt; MARGIN-TOP: 0pt">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="76%"></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>March 31,</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2016</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="6" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Notes payable</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">5,407</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,119</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Less: current portion</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(2,996</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(2,936</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Notes payable, net of current portion</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,411</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,183</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Debt discount, net of accretion</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(28</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(36</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Accretion related to final payment</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">340</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">306</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Notes payable, net of discount, long term</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">2,723</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,453</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
</tr>
</table>
</div>
Accelerated Filer
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>4. Accrued Expenses</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Accrued expenses consisted of the following as of March 31,
2016 and December 31, 2015:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="76%"></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>March 31,</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2016</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="6" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Accrued research and development expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,806</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,727</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Accrued payroll and related expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,159</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,802</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Accrued professional fees</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">667</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">422</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Accrued other</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">107</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">161</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,739</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,112</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
</div>
0.02
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>3. Fair Value Measurements and Marketable Securities</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Fair Value Measurements</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The following tables present information about the Company’s
financial assets that have been measured at fair value at
March 31, 2016 and December 31, 2015, and indicate the
fair value of the hierarchy of the valuation inputs utilized to
determine such fair value. In general, fair values determined by
Level 1 inputs utilize quoted prices (unadjusted) in active markets
for identical assets or liabilities. Fair value determined by Level
2 inputs utilize observable inputs other than Level 1 prices, such
as quoted prices, for similar assets or liabilities, quoted market
prices in markets that are not active or other inputs that are
observable or can be corroborated by observable market data for
substantially the full term of the related assets or liabilities.
Fair values determined by Level 3 inputs are unobservable data
points for the asset or liability, and include situations where
there is little, if any, market activity for the asset or
liability.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The following tables summarize the Company’s cash equivalents
and marketable securities as of March 31, 2016 and
December 31, 2015:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="60%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>March 31, 2016</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Total</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Quoted<br />
Prices in<br />
Active<br />
Markets<br />
(Level 1)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Other<br />
Observable<br />
Inputs<br />
(Level 2)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Unobservable<br />
Inputs<br />
(Level 3)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="14" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
<b>Cash equivalents:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Money market funds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">19,325</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">19,325</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,997</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,997</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total cash equivalents</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">23,322</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,325</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,997</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
<b>Marketable securities:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">95,489</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">95,489</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">29,945</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">29,945</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">9,300</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">9,300</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">134,734</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">134,734</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total cash equivalents and marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">158,056</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">19,325</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">138,731</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="60%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>December 31, 2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Total</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Quoted<br />
Prices in<br />
Active<br />
Markets<br />
(Level 1)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Other<br />
Observable<br />
Inputs<br />
(Level 2)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Unobservable<br />
Inputs</b><br />
<b>(Level 3)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="6" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
<b>Cash equivalents:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Money market funds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">—</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,999</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,999</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,697</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,697</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total cash equivalents</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">25,927</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,696</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
<b>Marketable securities:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">125,516</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">125,516</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,468</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,468</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">149,484</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">149,484</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total cash equivalents and marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">175,411</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">162,180</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
The carrying amounts reflected in the consolidated balance sheets
for tax incentive receivable, accounts payable, and accrued
expenses approximate fair value due to their short-term maturities.
The carrying value of the Company’s outstanding notes payable
approximates fair value (a Level 2 fair value measurement),
reflecting discount rates currently available to the Company.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Marketable Securities</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The following table summarizes the Company’s marketable
securities as of March 31, 2016 and December 31,
2015:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="63%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>March 31, 2016</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Amortized</b><br />
<b>Cost</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Gains</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Losses</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Fair Value</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="14" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
<b>Assets:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">88,599</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">31</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(35</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">88,595</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds (due after 1 year through 2 years)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6,880</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">14</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6,894</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Commercial paper (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">29,950</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(7</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">29,945</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
U.S. government securities (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">9,303</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">9,300</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">134,732</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">47</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(45</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">134,734</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="63%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>December 31, 2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Amortized</b><br />
<b>Cost</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Gains</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Losses</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Fair Value</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="14" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
<b>Assets:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">112,825</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">1</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(166</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">112,660</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds (due after 1 year through 2 years)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,884</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(31</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,856</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Commercial paper (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,478</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(10</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,468</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
U.S. government securities (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">149,687</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">4</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(207</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">149,484</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Marketable securities</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
Marketable securities consist of investments with original
maturities greater than ninety days. The Company has classified its
investments with maturities beyond one year as short term, based on
their highly liquid nature and because such marketable securities
represent the investment of cash that is available for current
operations. The Company considers its investment portfolio of
investments available-for-sale. Accordingly, these investments are
recorded at fair value, which is based on quoted market prices.
Unrealized gains and losses are reported as a component of
accumulated other comprehensive income (loss) in
stockholders’ equity. Realized gains and losses and declines
in value judged to be other than temporary are included as a
component of other income (expense), net based on the specific
identification method. When determining whether a decline in value
is other than temporary, the Company considers various factors,
including whether the Company has the intent to sell the security,
and whether it is more likely than not that the Company will be
required to sell the security prior to recovery of its amortized
cost basis. Fair value is determined based on quoted market
prices.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Accrued expenses consisted of the following as of March 31,
2016 and December 31, 2015:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="76%"></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>March 31,</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2016</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="6" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Accrued research and development expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,806</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,727</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Accrued payroll and related expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,159</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,802</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Accrued professional fees</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">667</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">422</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Accrued other</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">107</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">161</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,739</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,112</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt">
<b>1. Nature of the Business and Basis of Presentation</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
Zafgen, Inc., or the Company, was incorporated on November 22,
2005 under the laws of the State of Delaware. The Company is a
biopharmaceutical company dedicated to significantly improving the
health and well-being of patients affected by obesity and complex
metabolic disorders. Zafgen is focused on developing novel
therapeutics that treat the underlying biological mechanisms
through the methionine aminopeptidase 2, or MetAP2, pathway.
Beloranib, the Company’s lead product candidate, is a novel,
first-in-class, twice-weekly subcutaneous injection being developed
for the treatment of multiple indications, including severe obesity
in two rare diseases, Prader-Willi syndrome, or PWS, and
hypothalamic injury-associated obesity, or HIAO, including
craniopharyngioma-associated obesity; and severe obesity in the
general population. Zafgen is also developing ZGN-839, a
liver-targeted MetAP2 inhibitor, for the treatment of nonalcoholic
steatohepatitis, or NASH, and abdominal obesity, as well as
second-generation MetAP2 inhibitors, which may be developed for the
treatment of severe obesity in the general population. Since its
inception, the Company has devoted substantially all of its efforts
to research and development, recruiting management, acquiring
operating assets and raising capital.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
The Company is subject to risks common to companies in the
biotechnology industry including, but not limited to, new
technological innovations, protection of proprietary technology,
dependence on key personnel, compliance with government regulations
and the need to obtain additional financing. Product candidates
currently under development will require significant additional
research and development efforts, including extensive pre-clinical
and clinical testing and regulatory approval, prior to
commercialization. These efforts require significant amounts of
additional capital, adequate personnel infrastructure, and
extensive compliance-reporting capabilities.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
The Company’s product candidates are all in the development
stage. There can be no assurance that the Company’s research
and development will be successfully completed, that adequate
protection for the Company’s intellectual property will be
obtained, that any product candidates developed will obtain
necessary government regulatory approval or that any approved
products will be commercially viable. Even if the Company’s
product development efforts are successful, it is uncertain when,
if ever, the Company will generate significant revenue from product
sales. The Company operates in an environment of rapid change in
technology and substantial competition from pharmaceutical and
biotechnology companies. In addition, the Company is dependent upon
the services of its employees and consultants.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
The consolidated financial statements include the accounts of the
Company and its wholly owned subsidiaries Zafgen Securities
Corporation, Zafgen Australia Pty Limited, and Zafgen Animal
Health, LLC. All intercompany balances and transactions have been
eliminated.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
On January 28, 2015, the Company completed a follow-on
offering of its common stock, which resulted in the sale of
3,942,200 shares at a price of $35.00 per share. The Company
received net proceeds from the follow-on offering of $130.0 million
based upon the price of $35.00 per share after deducting
underwriting discounts and commissions paid by the Company. The
Company also incurred offering costs of $0.5 million related to the
follow-on offering.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Unaudited Interim Financial Information</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
The condensed consolidated balance sheet at December 31, 2015
was derived from the Company’s audited financial statements,
but does not include all disclosures required by accounting
principles generally accepted in the United States of America, or
GAAP. The accompanying unaudited condensed consolidated financial
statements as of March 31, 2016 and for the three months ended
March 31, 2016 and 2015, have been prepared by the Company,
pursuant to the rules and regulations of the Securities and
Exchange Commission, or SEC, for interim financial statements.
Certain information and footnote disclosures normally included in
financial statements prepared in accordance with GAAP have been
condensed or omitted pursuant to such rules and regulations.
However, the Company believes that the disclosures are adequate to
make the information presented not misleading. These condensed
consolidated financial statements should be read in conjunction
with the Company’s audited consolidated financial statements
and the notes thereto for the year ended December 31, 2015,
included in the Company’s Annual Report on Form 10-K, as
amended, for the year ended December 31, 2015, on file with
the SEC. In the opinion of management, all adjustments, consisting
only of normal recurring adjustments necessary for a fair statement
of the Company’s condensed consolidated financial position as
of March 31, 2016 and condensed consolidated results of
operations and cash flows for the three months ended March 31,
2016 and 2015 have been made. The results of operations for the
three months ended March 31, 2016 are not necessarily
indicative of the results of operations that may be expected for
the year ending December 31, 2016.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
The Company recorded stock-based compensation expense related to
stock options and restricted common stock in the following expense
categories within its consolidated statements of operations:</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 12pt; MARGIN-TOP: 0pt">
 </p>
<table style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman; BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="78%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="6" align="center">
<b>Three Months Ended March 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2016</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="6" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Research and development</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">828</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">404</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
General and administrative</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,928</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">653</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">2,756</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">1,057</td>
<td valign="bottom" nowrap="nowrap"> </td>
</tr>
</table>
</div>
--12-31
Zafgen, Inc.
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 0pt">
<b>8. Commitments and Contingencies</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt">
<b>Leases</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
The Company has a lease for office space in Boston, Massachusetts,
effective as of July 28, 2014, with a term expiring
July 31, 2017 and an option to extend the lease for three
additional years. In March 2015, the Company entered into an
operating lease for additional office space in Boston,
Massachusetts, effective as of April 15, 2015, with a term
expiring on July 31, 2017, and two options to extend this
lease for three additional years each. In October 2015, the Company
entered into an operating lease for office space in San Diego,
California, effective as of October 1, 2015, with a term
expiring on September 30, 2019, and an option to extend this
lease for five additional years.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
Future minimum lease payments for its operating leases as of
March 31, 2016 were as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 12pt; MARGIN-TOP: 0pt">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
</p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; BORDER-COLLAPSE: collapse" cellspacing="0" cellpadding="0" width="68%" align="center" border="0">
<tr>
<td width="91%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom" nowrap="nowrap">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman; BORDER-BOTTOM: rgb(0,0,0) 1pt solid; MARGIN-TOP: 0pt; WIDTH: 95.55pt">
<b>Years Ending December 31,</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">
<td valign="bottom" nowrap="nowrap"><b>(in thousands)</b></td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
2016 (April - December)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">325</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
2017</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">292</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
2018</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">106</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
2019</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">82</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">805</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
During the three months ended March 31, 2016 and 2015, the
Company recognized $0.1 million of rental expense related to office
space.</p>
<p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 18px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 0pt">
<b>Intellectual Property Licenses</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
The Company has acquired exclusive rights to develop patented
compounds and related know-how for beloranib under two licensing
agreements with two third parties in the course of its research and
development activities. The licensing rights obligate the Company
to make payments to the licensors for license fees, milestones,
license maintenance fees and royalties. The Company is also
responsible for patent prosecution costs.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
As of March 31, 2016, the Company is obligated to make
additional milestone payments of up to $12.3 million upon reaching
certain pre-commercialization milestones, such as clinical trials
and government approvals (including the U.S. Food and Drug
Administration, or FDA, approval of a New Drug Application, or
NDA), and up to $12.5 million upon reaching certain product
commercialization milestones. Under one of the license agreements,
the Company is also obligated to pay up to $1.3 million with
respect to each subsequent licensed product, if any, that is a new
chemical entity. In addition, the Company will owe single-digit
royalties on sales of commercial products developed using these
licensed technologies, if any.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
There were no milestones achieved during the three months ended
March 31, 2016 or 2015. The Company is also obligated to pay
to the licensors a percentage of fees received if and when the
Company sublicenses the technology. As of March 31, 2016, the
Company has not yet developed a commercial product using the
licensed technologies and it has not entered into any sublicense
agreements for the technologies.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Indemnification Agreements</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
In the ordinary course of business, the Company may provide
indemnification of varying scope and terms to vendors, lessors,
business partners, and other parties with respect to certain
matters including, but not limited to, losses arising out of breach
of such agreements or from intellectual property infringement
claims made by third parties. In addition, the Company has entered
into indemnification agreements with members of the Board of
Directors of the Company, or Board of Directors, that will require
the Company, among other things, to indemnify them against certain
liabilities that may arise by reason of their status or service as
directors or officers. The maximum potential amount of future
payments the Company could be required to make under these
indemnification agreements is, in many cases, unlimited. To date,
the Company has not incurred any material costs as a result of such
indemnifications. The Company does not believe that the outcome of
any claims under indemnification arrangements will have a material
effect on its financial position, results of operations or cash
flows, and it has not accrued any liabilities related to such
obligations in its consolidated financial statements as of
March 31, 2016.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Legal Proceedings</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
The Company accrues a liability for legal contingencies when it
believes that it is both probable that a liability has been
incurred and that the Company can reasonably estimate the amount of
the loss. The Company reviews these accruals and adjusts them to
reflect ongoing negotiations, settlements, rulings, advice of legal
counsel and other relevant information. To the extent new
information is obtained and the views on the probable outcomes of
claims, suits, assessments, investigations or legal proceedings
change, changes in the Company’s accrued liabilities would be
recorded in the period in which such determination is made. In
addition, in accordance with the relevant authoritative guidance,
for any matters in which the likelihood of material loss is at
least reasonably possible, the Company will provide disclosure of
the possible loss or range of loss. If a reasonable estimate cannot
be made, however, the Company will provide disclosure to that
effect. The Company expenses legal costs as they are incurred.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
On October 21, 2015, a purported stockholder of the Company
filed a putative class action lawsuit in the U.S. District Court
for the District of Massachusetts, against the Company and Thomas
E. Hughes, captioned Aviad Bessler v. Zafgen, Inc. and Thomas E.
Hughes, No. 1:15-cv-13618. An amended complaint was filed on
February 22, 2016. The amended complaint alleges violations of
Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and
SEC Rule 10b-5 based on allegedly false and misleading statements
and omissions regarding the Company’s clinical trials for its
drug beloranib. The lawsuit seeks, among other things, unspecified
compensatory damages in connection with the Company’s
allegedly inflated stock price between June 19, 2014 and
October 16, 2015, as a result of those allegedly false and
misleading statements, as well as punitive damages, interest,
attorneys’ fees and costs. On April 7, 2016, the Company
filed a motion to dismiss the amended complaint. The Company is
unable to predict the ultimate outcome of this action and therefore
cannot estimate possible losses or ranges of losses, if any.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
The Company may periodically become subject to other legal
proceedings and claims arising in connection with ongoing business
activities, including claims or disputes related to patents that
have been issued or that are pending in the field of research on
which the Company is focused. Other than the above action, the
Company is not aware of any other material claims as of
March 31, 2016.</p>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
</div>
<div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The following tables summarize the Company’s cash equivalents
and marketable securities as of March 31, 2016 and
December 31, 2015:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="60%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>March 31, 2016</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Total</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Quoted<br />
Prices in<br />
Active<br />
Markets<br />
(Level 1)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Other<br />
Observable<br />
Inputs<br />
(Level 2)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Unobservable<br />
Inputs<br />
(Level 3)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="14" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
<b>Cash equivalents:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Money market funds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">19,325</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">19,325</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,997</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,997</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total cash equivalents</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">23,322</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,325</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,997</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
<b>Marketable securities:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">95,489</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">95,489</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">29,945</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">29,945</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">9,300</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">9,300</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">134,734</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">134,734</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total cash equivalents and marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">158,056</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">19,325</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">138,731</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="60%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>December 31, 2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Total</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Quoted<br />
Prices in<br />
Active<br />
Markets<br />
(Level 1)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Other<br />
Observable<br />
Inputs<br />
(Level 2)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Unobservable<br />
Inputs</b><br />
<b>(Level 3)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="6" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
<b>Cash equivalents:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Money market funds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">—</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,999</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,999</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,697</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,697</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total cash equivalents</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">25,927</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,696</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
<b>Marketable securities:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Corporate bonds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">125,516</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">125,516</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,468</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,468</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">149,484</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">149,484</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Total cash equivalents and marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">175,411</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">162,180</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
</div>
</div>
2016-03-31
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>6. Stockholders’ Equity</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
On January 28, 2015, the Company completed a follow-on
offering of its common stock, which resulted in the sale of
3,942,200 shares at a price of $35.00 per share. The Company
received net proceeds from the follow-on offering of $130.0 million
based upon the price of $35.00 per share after deducting
underwriting discounts and commissions paid by the Company. The
Company also incurred offering costs of $0.5 million related to the
follow-on offering.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Use of Estimates</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The preparation of financial statements in conformity with GAAP
requires management to make estimates and assumptions that affect
the reported amounts of assets and liabilities, the disclosure of
contingent assets and liabilities at the date of the consolidated
financial statements, and the reported amounts of expenses during
the reporting periods. Significant estimates and assumptions
reflected in these consolidated financial statements include, but
are not limited to, the accrual of research and development
expenses and the valuation of stock-based awards. Estimates are
periodically reviewed in light of changes in circumstances, facts
and experience. Actual results could differ from the
Company’s estimates.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>7. Stock-Based Awards</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company grants equity awards under its 2014 Stock Option and
Incentive Plan, or the 2014 Stock Option Plan, and is authorized to
issue common stock under its 2014 Employee Stock Purchase Plan. The
Company also has outstanding stock-based awards under its Amended
and Restated 2006 Stock Option Plan but is no longer granting
awards under this plan. As of March 31, 2016, 1,421,644 shares
are available for grant under the 2014 Stock Option Plan, including
1,089,700 shares automatically added to the 2014 Stock Option Plan
on January 1, 2016 as a result of a provision in the 2014
Stock Option Plan.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company recorded stock-based compensation expense related to
stock options and restricted common stock in the following expense
categories within its consolidated statements of operations:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="78%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="6" align="center">
<b>Three Months Ended March 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2016</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="6" align="center"><b>(in
thousands)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Research and development</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">828</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">404</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
General and administrative</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,928</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">653</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">2,756</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">1,057</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
As of March 31, 2016, the Company had an aggregate of $28.1
million of unrecognized stock-based compensation expense, which is
expected to be recognized over a weighted average period of 2.6
years. As of March 31, 2016, there were outstanding unvested
service-based stock options held by nonemployees for the purchase
of 7,269 shares of common stock.</p>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Net Income (Loss) Per Share</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Basic net income (loss) per share attributable to common
stockholders is computed by dividing the net income (loss)
attributable to common stockholders by the weighted average number
of common shares outstanding for the period. Diluted net income
(loss) per share attributable to common stockholders is computed by
dividing the diluted net income (loss) attributable to common
stockholders by the weighted average number of common shares,
including potential dilutive common shares assuming the dilutive
effect of outstanding stock options and unvested restricted common
shares, as determined using the treasury stock method. For periods
in which the Company has reported net losses, diluted net loss per
common share attributable to common stockholders is the same as
basic net loss per common share attributable to common
stockholders, since dilutive common shares are not assumed to have
been issued if their effect is antidilutive.</p>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company excluded the following common stock equivalents,
outstanding as of March 31, 2016 and 2015, from the
computation of diluted net loss per share for the three months
ended March 31, 2016 and 2015 because they had an
anti-dilutive impact due to the net loss incurred for the
periods:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="76%"></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="6" align="center"><b>As of March 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2016</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Options to purchase common stock</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,825,654</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,589,767</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Unvested restricted common stock units</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">13,273</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,870</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,838,927</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,593,637</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Recently Issued and Adopted Accounting Pronouncements</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
In August 2014, the Financial Accounting Standards Board, or FASB,
issued ASU No. 2014-15, <i>Presentation of Financial
Statements—Going Concern</i>. The new guidance addresses
management’s responsibility to evaluate whether there is
substantial doubt about an entity’s ability to continue as a
going concern and to provide related footnote disclosures.
Management’s evaluation should be based on relevant
conditions and events that are known and reasonably knowable at the
date that the financial statements are issued. The standard will be
effective for the first interim period within annual reporting
periods beginning after December 15, 2016. Early adoption is
permitted. The Company is evaluating the effect that this guidance
will have on its consolidated financial statements.</p>
<p style="MARGIN-BOTTOM: 0px; FONT-SIZE: 1px; MARGIN-TOP: 12px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 0pt; TEXT-INDENT: 4%">
In November 2015, the FASB issued ASU No. 2015-17, <i>Balance
Sheet Classification of Deferred Taxes.</i> This guidance requires
companies to classify all deferred tax assets and liabilities as
noncurrent on the balance sheet instead of separating deferred
taxes into current and noncurrent amounts. This guidance allows for
adoption on either a prospective or retrospective basis and will be
effective on January 1, 2017. Early adoption is permitted. The
Company has elected to early adopt this guidance on a prospective
basis and, as a result, prior consolidated balance sheets were not
retrospectively adjusted. The adoption of this guidance did not
have a material impact on the Company’s consolidated
financial statements and related disclosures.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
In February 2016, the FASB issued ASU No. 2016-02,
<i>Leases</i>. This guidance will require that lease arrangements
longer than 12 months result in an entity recognizing an asset and
liability equal to the present value of the lease payments in the
statement of financial position. This guidance is effective for
annual periods beginning after December 15, 2018, and interim
periods therein. This standard requires a modified retrospective
transition approach for all leases existing at, or entered into
after, the date of initial application, with an option to use
certain transition relief. Early adoption is permitted. The Company
is evaluating the effect that this guidance will have on its
consolidated financial statements.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
In March 2016, the FASB issued ASU No. 2016-09,
<i>Improvements to Employee Share-Based Payment Accounting</i>.
This guidance involves several aspects of the accounting for
share-based payment transactions, including the income tax
consequences, classification of awards as either equity or
liabilities and classification on the statement of cash flows. This
guidance allows for adoption on either a prospective or
retrospective basis and will be effective on January 1, 2017.
Early adoption is permitted. The Company is evaluating the effect
that this guidance will have on its consolidated financial
statements.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Future minimum lease payments for its operating leases as of
March 31, 2016 were as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="68%" align="center" border="0">
<tr>
<td width="91%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom" nowrap="nowrap">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'; BORDER-BOTTOM: rgb(0,0,0) 1pt solid; MARGIN-TOP: 0pt; WIDTH: 95.55pt">
<b>Years Ending December 31,</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom" nowrap="nowrap"><b>(in thousands)</b></td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
2016 (April - December)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">325</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
2017</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">292</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
2018</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">106</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
2019</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">82</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">805</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>2. Summary of Significant Accounting Policies</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Use of Estimates</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The preparation of financial statements in conformity with GAAP
requires management to make estimates and assumptions that affect
the reported amounts of assets and liabilities, the disclosure of
contingent assets and liabilities at the date of the consolidated
financial statements, and the reported amounts of expenses during
the reporting periods. Significant estimates and assumptions
reflected in these consolidated financial statements include, but
are not limited to, the accrual of research and development
expenses and the valuation of stock-based awards. Estimates are
periodically reviewed in light of changes in circumstances, facts
and experience. Actual results could differ from the
Company’s estimates.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Marketable securities</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Marketable securities consist of investments with original
maturities greater than ninety days. The Company has classified its
investments with maturities beyond one year as short term, based on
their highly liquid nature and because such marketable securities
represent the investment of cash that is available for current
operations. The Company considers its investment portfolio of
investments available-for-sale. Accordingly, these investments are
recorded at fair value, which is based on quoted market prices.
Unrealized gains and losses are reported as a component of
accumulated other comprehensive income (loss) in
stockholders’ equity. Realized gains and losses and declines
in value judged to be other than temporary are included as a
component of other income (expense), net based on the specific
identification method. When determining whether a decline in value
is other than temporary, the Company considers various factors,
including whether the Company has the intent to sell the security,
and whether it is more likely than not that the Company will be
required to sell the security prior to recovery of its amortized
cost basis. Fair value is determined based on quoted market
prices.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Net Income (Loss) Per Share</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Basic net income (loss) per share attributable to common
stockholders is computed by dividing the net income (loss)
attributable to common stockholders by the weighted average number
of common shares outstanding for the period. Diluted net income
(loss) per share attributable to common stockholders is computed by
dividing the diluted net income (loss) attributable to common
stockholders by the weighted average number of common shares,
including potential dilutive common shares assuming the dilutive
effect of outstanding stock options and unvested restricted common
shares, as determined using the treasury stock method. For periods
in which the Company has reported net losses, diluted net loss per
common share attributable to common stockholders is the same as
basic net loss per common share attributable to common
stockholders, since dilutive common shares are not assumed to have
been issued if their effect is antidilutive.</p>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company excluded the following common stock equivalents,
outstanding as of March 31, 2016 and 2015, from the
computation of diluted net loss per share for the three months
ended March 31, 2016 and 2015 because they had an
anti-dilutive impact due to the net loss incurred for the
periods:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="76%"></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="6" align="center"><b>As of March 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2016</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Options to purchase common stock</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,825,654</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,589,767</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; MARGIN-TOP: 0pt; TEXT-INDENT: -1em">
Unvested restricted common stock units</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">13,273</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,870</td>
<td valign="bottom" nowrap="nowrap">  </td>
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<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 1px solid; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,838,927</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,593,637</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td valign="bottom">
<p style="MARGIN-BOTTOM: 0pt; BORDER-TOP: rgb(0,0,0) 3px double; MARGIN-TOP: 0pt">
 </p>
</td>
<td> </td>
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<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Recently Issued and Adopted Accounting Pronouncements</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In August 2014, the Financial Accounting Standards Board, or FASB,
issued ASU No. 2014-15, <i>Presentation of Financial
Statements—Going Concern</i>. The new guidance addresses
management’s responsibility to evaluate whether there is
substantial doubt about an entity’s ability to continue as a
going concern and to provide related footnote disclosures.
Management’s evaluation should be based on relevant
conditions and events that are known and reasonably knowable at the
date that the financial statements are issued. The standard will be
effective for the first interim period within annual reporting
periods beginning after December 15, 2016. Early adoption is
permitted. The Company is evaluating the effect that this guidance
will have on its consolidated financial statements.</p>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In November 2015, the FASB issued ASU No. 2015-17, <i>Balance Sheet
Classification of Deferred Taxes.</i> This guidance requires
companies to classify all deferred tax assets and liabilities as
noncurrent on the balance sheet instead of separating deferred
taxes into current and noncurrent amounts. This guidance allows for
adoption on either a prospective or retrospective basis and will be
effective on January 1, 2017. Early adoption is permitted. The
Company has elected to early adopt this guidance on a prospective
basis and, as a result, prior consolidated balance sheets were not
retrospectively adjusted. The adoption of this guidance did not
have a material impact on the Company’s consolidated
financial statements and related disclosures.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In February 2016, the FASB issued ASU No. 2016-02, <i>Leases</i>. This guidance
will require that lease arrangements longer than 12 months result
in an entity recognizing an asset and liability equal to the
present value of the lease payments in the statement of financial
position. This guidance is effective for annual periods beginning
after December 15, 2018, and interim periods therein. This
standard requires a modified retrospective transition approach for
all leases existing at, or entered into after, the date of initial
application, with an option to use certain transition relief. Early
adoption is permitted. The Company is evaluating the effect that
this guidance will have on its consolidated financial
statements.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In March 2016, the FASB issued ASU No. 2016-09, <i>Improvements to Employee
Share-Based Payment Accounting</i>. This guidance involves several
aspects of the accounting for share-based payment transactions,
including the income tax consequences, classification of awards as
either equity or liabilities and classification on the statement of
cash flows. This guidance allows for adoption on either a
prospective or retrospective basis and will be effective on
January 1, 2017. Early adoption is permitted. The Company is
evaluating the effect that this guidance will have on its
consolidated financial statements.</p>
</div>
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